During recent EME tests I was faced to very strange signals next to the bounced EME signal.

It turned out to be a direct signal path and a signal path caused by airplane scatter.

See below at 1500 &1800Hz the bounced EME signal of PA2DW sending RRR's in JT9 mode. 

At 2300 & 2600Hz the direct path and the swallow lines caused by airplane scatter.